บิดา Learn Unstarted Summary The Thai translation for “father (formal)” is บิดา. See also Recording English Thai Learn mother (formal) มารดา Learn father พ่อ Learn mother แม่ Learn Practice Lesson "father (formal)" Practice (1) Lesson Learn Lesson words father (formal) etc. View all lesson words Lesson phrases This lesson has no phrases. Themed Courses People 25 Part of Speech Courses Nouns 261